Float Switches

Float switches regulate the liquid level in tanks, wells, etc. and are used for automatic level control of groundwater, wastewater and sewage pumps, for raw water and liquid transfer pumps at waterworks, and for high water alarm.


What does a float switch consist of?


Float switches have a reed switch and a pivoted magnet and can be used for normally open (N/O) or normally closed (N/C) operation. The switch action can be reversed rotating the switch through 180°. The movement of float, due to changing fluid level, will cause the reed change to work (for instance close or open) at a specific level. This trusted and tried technology depends on a generally straightforward plan that offers long-haul quality without the requirement for the user to calibrate a switch.


What are material types of a float switch?


  • Nylon – used for oils, diesel, organic chemicals

  • Polypropylene (PP) – acids and alkali, detergents, oils, water, organic chemicals

  • Polyphenylene sulphide (PPS) – used for more aggressive chemicals, and higher temperatures, up to 120ºC

  • Stainless steel – medical and food industries, hydraulic fluids, chemicals

Features and Benefits


  • The highly flexible thermoplastic rubber cable has an extremely high mechanical load rating

  • The drop shape of the stabilizing weight eccentrically mounted in the housing makes the float switch insensitive to turbulence

  • The microswitch, fitted in a dual-chamber system, is completely shock- and rupture-proof

Where can be float switches used?


  • when emptying a tank

  • when filling a tank

  • for alarm at high water level

  • for alarm at low water level

...
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Description Price Device Type For Use With Mounting Type Switch Output Body Material Cable Length Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating
RS Stock No. 725-9836
Mfr. Part No.RSF44H100RF
BrandCynergy3
MYR95.39
Each
units
Float - Horizontal Internal NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 122-8396
Mfr. Part No.165900
MYR109.19
Each
units
Float - Horizontal SPST NO/NC Nylon 24in -40°C +121.1°C - - - 3.4bar HNBR -
RS Stock No. 124-2590
Mfr. Part No.RSF107H100GN/RS
BrandCynergy3
MYR282.58
Each
units
Float - Vertical NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 300V 300V 1 A - Nitrile -
RS Stock No. 869-7586
Mfr. Part No.RSF78YNP
BrandCynergy3
MYR71.77
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 124-2601
Mfr. Part No.MC050BH/RS
BrandCynergy3
MYR1,023.87
Each
units
Float - Cable Mount NC Stainless Steel 304 5m 0°C +130°C - 60V 250 mA 4bar - -
RS Stock No. 756-4126
Mfr. Part No.SSF212X100-14G
BrandCynergy3
MYR644.30
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - - - - 500 mA 10bar - -
RS Stock No. 906-9607
Mfr. Part No.FSW2-DNPN-30
MYR444.99
Each
units
Float Switch - Vertical SPDT Polypropylene 359.8in 0°C +50°C 250V - - 2bar - 10 A
RS Stock No. 869-7560
Mfr. Part No.RSF43YFP
BrandCynergy3
MYR87.76
Each
units
Float - Horizontal NO/NC Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile -
RS Stock No. 122-8391
Mfr. Part No.182600
MYR344.83
Each
units
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 725-9842
Mfr. Part No.RSF73H100RN
BrandCynergy3
MYR110.88
Each
units
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 431-8412
Mfr. Part No.SSF213T050
BrandCynergy3
MYR636.86
Each
units
Float - Horizontal NO/NC Stainless Steel 500mm - +120°C - - 100 mA 5bar - -
RS Stock No. 122-8382
Mfr. Part No.116826
MYR235.95
Each
units
Float - Vertical SPST NO Polypropylene 24in -40°C +66°C - - - 10bar - -
RS Stock No. 124-2587
Mfr. Part No.RSF87YP/RS
BrandCynergy3
MYR207.70
Each
units
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - - -
RS Stock No. 395-7044
Mfr. Part No.011-1700
MYR227.15
Each
units
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
RS Stock No. 228-1992
Mfr. Part No.RSF34W100RF
BrandCynergy3
MYR113.92
Each
units
Float - Horizontal NO/NC Polypropylene 1m -20°C +100°C - - 5 A - Nitrile -
RS Stock No. 122-8402
Mfr. Part No.74780
MYR395.66
Each
units
Float - Vertical SPST NO CPVC 24in -40°C +82.2°C - - - 15psi - -
RS Stock No. 725-9830
Mfr. Part No.RSF46H050TG
BrandCynergy3
MYR140.07
Each
units
Float - Horizontal Internal NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Nitrile -
RS Stock No. 725-9852
Mfr. Part No.RSF83Y100R
BrandCynergy3
MYR77.59
Each
units
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - - -
RS Stock No. 725-9909
Mfr. Part No.SSF24X100
BrandCynergy3
MYR497.10
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +120°C - - 500 mA 10bar - -
RS Stock No. 122-8414
Mfr. Part No.144080
MYR964.87
Each
units
Float - Vertical SPST NC Aluminium 24in -40°C +148.9°C - - - 600psi - -
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